Aluminium oxide is impermeable and, unlike the oxide layers on many other metals, it adheres strongly to the parent metal. If damaged mechanically, aluminiumâs oxide layer repairs itself immediately.
Saliva helps remove oral waste and cavity-causing bacteria, protects teeth from decay by neutralizing harmful acids, and helps re-mineralize tooth enamel. Saliva also keeps oral tissues healthy by preventing infection by controlling bacteria and fungi in the mouth.
Saliva is an importa: Saliva is an important part of our oral health. It is a natural lubricant, cleaner and contains beneficial bacteria to start the digestion process. It also helps us taste food and swallow. Excess saliva may be cause by certain medications, foods or toxins that may be exposed to.